World's Weirdest: Amazing Sting Defense

The Portuguese man-of-war is 50 times bigger than this nudibranch, a tiny sea slug. But in this David-versus-Goliath scenario, don't bet against the nudibranch. It can nibble away at its enemy's deadly tentacles and use the man-of-war's stingers for its own.

World's Weirdest: Amazing Sting Defense

The Portuguese man-of-war is 50 times bigger than this nudibranch, a tiny sea slug. But in this David-versus-Goliath scenario, don't bet against the nudibranch. It can nibble away at its enemy's deadly tentacles and use the man-of-war's stingers for its own.

World's Weirdest: Amazing Sting Defense

The Portuguese man-of-war is 50 times bigger than this nudibranch, a tiny sea slug. But in this David-versus-Goliath scenario, don't bet against the nudibranch. It can nibble away at its enemy's deadly tentacles and use the man-of-war's stingers for its own.